body {
	transition-duration:5s;
	-webkit-transition-duration:5s;
	background:url(#{resource['img:mapamundi.png']}); 
}
body:hover {
	transition-duration:5s;
	-webkit-transition-duration:5s;
	background:url(#{resource['img:mapamundi2.png']}); 
	}
	
img {margin:0 auto;margin-left:20%;}